基于THK-SHS35V型号的滚动直线导轨副预紧力精确计算方法研究

doi:10.3901/JME.2023.03.208

机械工程学报 ›› 2023, Vol. 59 ›› Issue (3): 208-217.doi: 10.3901/JME.2023.03.208

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基于THK-SHS35V型号的滚动直线导轨副预紧力精确计算方法研究

周长光^1,2, 王晓艺^1,2, 冯虎田^1,2, 欧屹^1,2, 周华西^1,2

1. 南京理工大学机械工程学院南京 210094
2. 数控机床功能部件共性技术工业和信息化部重点实验室张家港 215600

收稿日期:2022-03-09 修回日期:2022-05-15 出版日期:2023-02-05 发布日期:2023-04-23
通讯作者: 周长光(通信作者),男,1989年出生,博士,副教授,硕士研究生导师。主要研究方向为数控机床功能部件共性检测技术、失效机理分析、故障诊断等。E-mail:zhoucg@njust.edu.cn
基金资助:
国家科技重大专项高质量发展专项(TC210H038-02)、国家自然科学基金(51905274)和丽水市重点研发计划(2022KFQZDYF15-001)资助项目。

Research on An Explicit Preload Calculation Method of Linear Rolling Guide THK-SHS35V

ZHOU Changguang^1,2, WANG Xiaoyi^1,2, FENG Hutian^1,2, OU Yi^1,2, ZHOU Huaxi^1,2

1. School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094;
2. Key Laboratory of the Ministry of Industry and Information Technology on General Technology of Functional Parts of Numerical Control Machine, Zhangjiagang 215600

Received:2022-03-09 Revised:2022-05-15 Online:2023-02-05 Published:2023-04-23

摘要/Abstract

摘要： 针对目前只能通过滚动体过盈量粗略判定滚动直线导轨副预压等级(轻、中、重)的现状,首先基于Hertz接触理论建立了载荷和预紧拖动力关系模型,然后创新性构建了一种载荷和预紧拖动力同步在线测量系统,测量了不同载荷、运动速度下THK-SHS35V型号的滚动直线导轨副的动态摩擦因数,进而得到其Stribeck曲线。将摩擦因数与载荷-预紧拖动力关系模型相结合,最终建立了一种滚动直线导轨副预紧力精确计算模型。试验结果表明,所建立的预紧力计算模型能有效预测被测样件的预紧力,其最大相对误差为18.91%。提出利用Stribeck曲线得到动态摩擦因数经验公式建立预紧力计算模型的方法,可进一步扩展应用于其他型号的滚动直线导轨副。

关键词: 滚动直线导轨副, 预紧力, 预紧拖动力, Stribeck曲线, 摩擦因数

Abstract: Up to now, the oversize of rolling elements can only classify the preloading level of linear rolling guides as light, middle, and heavy. Based on the Hertz contact theory, the load and preload drag force model is proposed, firstly. Next, based on a novel measuring system for the load and preload drag force synchronous online measurement, the dynamic friction coefficients of a linear rolling guide (THK-SHS35V) are measured under different load and velocity conditions. And then the Stribeck curve of the linear rolling guide is obtained. Finally, an explicit preload calculation model for linear rolling guides is established by the relationship between the load and preload drag force. The experimental results show that the preload calculation model established in this paper can accurately and effectively predict the preload of the tested sample, with maximum relative error 18.91%. The empirical formula of dynamic friction coefficient obtained by Stribeck curve can be effectively used to establish the preload calculation model of linear rolling guide, which can be further extended to other types of linear rolling guides.

Key words: linear rolling guide, preload, drag force under preload, Stribeck curve, friction coefficient

中图分类号:

TH823
TH123

周长光, 王晓艺, 冯虎田, 欧屹, 周华西. 基于THK-SHS35V型号的滚动直线导轨副预紧力精确计算方法研究[J]. 机械工程学报, 2023, 59(3): 208-217.

ZHOU Changguang, WANG Xiaoyi, FENG Hutian, OU Yi, ZHOU Huaxi. Research on An Explicit Preload Calculation Method of Linear Rolling Guide THK-SHS35V[J]. Journal of Mechanical Engineering, 2023, 59(3): 208-217.

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基于THK-SHS35V型号的滚动直线导轨副预紧力精确计算方法研究

Research on An Explicit Preload Calculation Method of Linear Rolling Guide THK-SHS35V

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